Two genomes of highly polyphagous lepidopteran pests (Spodoptera frugiperda, Noctuidae) with different host-plant ranges

Anaïs Gouin, Anthony Bretaudeau, Kiwoong Nam, Sylvie Gimenez, Jean Marc Aury, Bernard Duvic, Frédérique Hilliou, Nicolas Durand, Nicolas Montagné, Isabelle Darboux, Suyog Kuwar, Thomas Chertemps, David Siaussat, Anne Bretschneider, Yves Moné, Seung Joon Ahn, Sabine Hänniger, Anne Sophie Gosselin Grenet, David Neunemann, Florian MaumusIsabelle Luyten, Karine Labadie, Wei Xu, Fotini Koutroumpa, Jean Michel Escoubas, Angel Llopis, Martine Maïbèche-Coisne, Fanny Salasc, Archana Tomar, Alisha R. Anderson, Sher Afzal Khan, Pascaline Dumas, Marion Orsucci, Julie Guy, Caroline Belser, Adriana Alberti, Benjamin Noel, Arnaud Couloux, Jonathan Mercier, Sabine Nidelet, Emeric Dubois, Nai Yong Liu, Isabelle Boulogne, Olivier Mirabeau, Gaelle Le Goff, Karl Gordon, John Oakeshott, Fernando L. Consoli, Anne Nathalie Volkoff, Howard W. Fescemyer, James H. Marden, Dawn S. Luthe, Salvador Herrero, David G. Heckel, Patrick Wincker, Gael J. Kergoat, Joelle Amselem, Hadi Quesneville, Astrid T. Groot, Emmanuelle Jacquin-Joly, Nicolas Nègre, Claire Lemaitre, Fabrice Legeai, Emmanuelle D'Alençon, Philippe Fournier

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

Abstract

Emergence of polyphagous herbivorous insects entails significant adaptation to recognize, detoxify and digest a variety of host-plants. Despite of its biological and practical importance - since insects eat 20% of crops - no exhaustive analysis of gene repertoires required for adaptations in generalist insect herbivores has previously been performed. The noctuid moth Spodoptera frugiperda ranks as one of the world's worst agricultural pests. This insect is polyphagous while the majority of other lepidopteran herbivores are specialist. It consists of two morphologically indistinguishable strains ("C" and "R") that have different host plant ranges. To describe the evolutionary mechanisms that both enable the emergence of polyphagous herbivory and lead to the shift in the host preference, we analyzed whole genome sequences from laboratory and natural populations of both strains. We observed huge expansions of genes associated with chemosensation and detoxification compared with specialist Lepidoptera. These expansions are largely due to tandem duplication, a possible adaptation mechanism enabling polyphagy. Individuals from natural C and R populations show significant genomic differentiation. We found signatures of positive selection in genes involved in chemoreception, detoxification and digestion, and copy number variation in the two latter gene families, suggesting an adaptive role for structural variation.

Original languageEnglish (US)
Article number11816
JournalScientific reports
Volume7
Issue number1
DOIs
StatePublished - Dec 1 2017

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'Two genomes of highly polyphagous lepidopteran pests (Spodoptera frugiperda, Noctuidae) with different host-plant ranges'. Together they form a unique fingerprint.

Cite this